6909205248664 has 8 divisors (see below), whose sum is σ = 12954759841260. Its totient is φ = 3454602624328.

The previous prime is 6909205248643. The next prime is 6909205248683. The reversal of 6909205248664 is 4668425029096.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431825328034 + ... + 431825328049.

Almost surely, 2^{6909205248664} is an apocalyptic number.

It is an amenable number.

6909205248664 is a deficient number, since it is larger than the sum of its proper divisors (6045554592596).

6909205248664 is a wasteful number, since it uses less digits than its factorization.

6909205248664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863650656089 (or 863650656085 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 61.

The spelling of 6909205248664 in words is "six trillion, nine hundred nine billion, two hundred five million, two hundred forty-eight thousand, six hundred sixty-four".